In a test comparing vinyl and latex laboratory gloves, it was found that 63% of the vinyl gloves leaked (allowing viruses to pass through), but only 7% of the latex gloves leaked.

Percentages of Percentages. Exercises describe changes in which the measurements themselves are percentages. Using the first percentage as the reference value, express each change in two ways: (1) as an absolute difference in terms of percentage points and (2) as a relative difference in terms of a percentage.